Avaliação da qualidade do microrrevestimento asfáltico a frio utilizando diferentes tipos de ligantes

Abstract

Microsurfacing (MS) is a type of bituminous coating applied in pavement maintenance that has been successfully used in Brazil and all over the world. According to its service specification, the appropriate bituminous binder adopted in MS applications is Quick Set Polymer Modified Asphalt Emulsion (RC1C-E). However, the use of Slow Set Emulsion has been observed in some field researches , which is indicated for Slurry Seals (SS) applications, causing a reduction on the durability of the MS. The main objective of this paper is evaluate the MS behavior when using different types of bituminous binder. Results obtained in the laboratory indicated that the substitution of the binder entails an increase on surface wear and the coating cure times for release to the traffic are appreciably altered. Therefore, the importance of the previous characterization of the materials used in MS works is emphasized. Finally, a simplified field methodology was proposed to verify the emulsion quality applied in MS.